:root {
  color-scheme: light;
  --ink: #2d373a;
  --navy: #222b2e;
  --midnight: #101313;
  --panel: #343f42;
  --muted: #687174;
  --line: #e8dfd2;
  --paper: #fbf7ef;
  --white: #fffdf8;
  --gold: #f2bc57;
  --amber: #d8952f;
  --copper: #8b5a20;
  --slate: #575f61;
  --pale-gold: #fff0c2;
  --shadow: 0 22px 70px rgba(45, 55, 58, 0.18);
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

section,
article {
  scroll-margin-top: 104px;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(45, 55, 58, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(45, 55, 58, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 64px 64px;
  line-height: 1.55;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

::selection {
  background: rgba(242, 188, 87, 0.38);
}

.skip-link {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 14px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-140%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  padding: 14px clamp(12px, 3vw, 30px);
  transition:
    background 180ms ease,
    box-shadow 180ms ease,
    padding 180ms ease;
}

.site-header.is-scrolled {
  padding-block: 10px;
  background: rgba(251, 247, 239, 0.92);
  box-shadow: 0 12px 36px rgba(45, 55, 58, 0.1);
  backdrop-filter: blur(16px);
}

.nav {
  width: min(100%, 1320px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand {
  padding: 6px 8px;
  border: 1px solid rgba(255, 253, 248, 0.72);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.92);
  box-shadow: 0 12px 34px rgba(16, 19, 19, 0.16);
}

.brand img {
  flex: 0 0 auto;
  width: 142px;
  height: auto;
}

.brand span {
  display: none;
  line-height: 1.12;
}

.brand small {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 750;
  white-space: nowrap;
}

.site-header.is-scrolled .brand {
  border-color: rgba(232, 223, 210, 0.96);
  background: rgba(255, 253, 248, 0.97);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 7px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.82rem;
  font-weight: 650;
  white-space: nowrap;
}

.site-header.is-scrolled .nav-link {
  color: var(--ink);
}

.nav-menu a[aria-current="page"] {
  color: var(--gold);
}

.site-header.is-scrolled .nav-menu a[aria-current="page"] {
  color: var(--copper);
}


.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 750;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: var(--midnight);
  background: var(--gold);
}

.button.ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.36);
  background: rgba(255, 255, 255, 0.08);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: var(--radius);
  background: rgba(16, 19, 19, 0.24);
  place-items: center;
  padding: 10px;
}

.menu-toggle span:not(.visually-hidden) {
  display: block;
  width: 22px;
  height: 2px;
  margin: 3px auto;
  background: var(--white);
  transition:
    transform 180ms ease,
    opacity 180ms ease;
}

.site-header.is-scrolled .menu-toggle {
  background: rgba(16, 19, 19, 0.1);
  border: 1px solid rgba(16, 19, 19, 0.12);
}

.site-header.is-scrolled .menu-toggle span:not(.visually-hidden) {
  background: var(--ink);
}

.menu-open .menu-toggle span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

.menu-open .menu-toggle span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: min(620px, 74svh);
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--white);
  background: var(--midnight);
}

.hero::after {
  display: none;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(16, 19, 19, 0.74) 0%, rgba(16, 19, 19, 0.46) 48%, rgba(16, 19, 19, 0.16) 100%),
    linear-gradient(0deg, rgba(16, 19, 19, 0.34) 0%, rgba(16, 19, 19, 0.02) 48%, rgba(16, 19, 19, 0.18) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 112px clamp(18px, 4vw, 28px) 52px;
}


.section-kicker {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 680px;
  margin-bottom: 16px;
  font-size: clamp(2.8rem, 5.8vw, 5.6rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.8rem, 3.6vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.25rem;
  line-height: 1.16;
}

.hero-lede {
  max-width: 580px;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.02rem, 1.45vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}



.subpage-hero {
  position: relative;
  min-height: clamp(340px, 44svh, 420px);
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(255, 253, 248, 0.05) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 253, 248, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 76% 42%, rgba(242, 188, 87, 0.2), transparent 23%),
    linear-gradient(135deg, #101313 0%, #222b2e 62%, #171b1c 100%);
  background-size:
    72px 72px,
    72px 72px,
    auto,
    auto;
}

.subpage-hero.photo-hero {
  background: var(--midnight);
}

.subpage-hero.photo-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--hero-photo);
  background-position: var(--hero-photo-position, center);
  background-size: cover;
  transform: scale(var(--hero-photo-scale, 1.01));
}

.subpage-hero::after {
  content: "";
  position: absolute;
  right: 4%;
  bottom: 22%;
  width: min(54vw, 720px);
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(242, 188, 87, 0.9), transparent);
  box-shadow: 0 0 12px rgba(242, 188, 87, 0.34);
  transform: rotate(-6deg);
  opacity: 0.72;
  pointer-events: none;
}

.subpage-hero.photo-hero::after {
  inset: 0;
  right: auto;
  bottom: auto;
  width: auto;
  height: auto;
  background:
    linear-gradient(90deg, rgba(16, 19, 19, 0.84) 0%, rgba(16, 19, 19, 0.58) 50%, rgba(16, 19, 19, 0.24) 100%),
    linear-gradient(0deg, rgba(16, 19, 19, 0.42) 0%, rgba(16, 19, 19, 0.08) 58%, rgba(16, 19, 19, 0.22) 100%);
  box-shadow: none;
  transform: none;
  opacity: 1;
}


.subpage-hero.photo-hero h1,
.subpage-hero.photo-hero .hero-lede {
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.46);
}

.subpage-hero-content {
  position: relative;
  z-index: 1;
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 92px clamp(18px, 4vw, 28px) 40px;
}

.subpage-hero h1 {
  max-width: 760px;
  font-size: clamp(2.1rem, 4.2vw, 4.25rem);
  line-height: 1.02;
}

.section {
  padding: clamp(48px, 6vw, 84px) clamp(18px, 4vw, 42px);
}

.section > *,
.contact-section > *,
.site-footer > * {
  position: relative;
}


.section-heading,
.catalog-grid,
.comparison,
.technology,
.contact-section,
.site-footer {
  width: min(100%, var(--max));
  margin-inline: auto;
}


.section-heading p:last-child {
  margin-bottom: 0;
}

.dark {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 12%, rgba(242, 188, 87, 0.16), transparent 24%),
    linear-gradient(90deg, rgba(255, 253, 248, 0.055) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 253, 248, 0.04) 1px, transparent 1px),
    linear-gradient(180deg, var(--navy) 0%, #171b1c 100%),
    var(--navy);
  background-size:
    auto,
    72px 72px,
    72px 72px,
    auto,
    auto;
}

.dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 0 18%, rgba(242, 188, 87, 0.16) 18.2%, transparent 18.6% 100%),
    linear-gradient(165deg, transparent 0 58%, rgba(242, 188, 87, 0.12) 58.1%, transparent 58.5% 100%);
  opacity: 0.7;
  pointer-events: none;
}

.dark .section-kicker,
.technology .section-kicker {
  color: var(--gold);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 28px;
  margin-left: calc((100% - min(100%, var(--max))) / 2);
}

.section-heading.compact {
  max-width: 860px;
  margin-inline: auto;
  text-align: center;
}

.section-heading p {
  color: inherit;
  opacity: 0.76;
  font-size: 1.08rem;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  position: relative;
  min-height: 0;
  padding: clamp(22px, 3vw, 28px);
  display: grid;
  grid-template-rows: auto auto auto;
  align-content: start;
  gap: 14px;
  overflow: hidden;
  border: 1px solid rgba(242, 188, 87, 0.26);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 253, 248, 0.1), rgba(255, 253, 248, 0.035)),
    rgba(16, 19, 19, 0.62);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.18);
}

.product-card::before {
  display: none;
}

.product-card > * {
  position: relative;
}

.product-card h3 {
  max-width: 680px;
  margin-bottom: 0;
  font-size: clamp(1.55rem, 2.3vw, 2.3rem);
}

.product-card p {
  color: rgba(255, 253, 248, 0.76);
  font-size: 1.02rem;
}

.text-link {
  align-self: start;
  width: fit-content;
  margin-top: 6px;
  color: var(--gold);
  font-weight: 850;
}

.text-link::after {
  content: " ->";
}

.inline-link {
  color: var(--copper);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.dark .inline-link {
  color: var(--gold);
}

.product-comparison {
  background: var(--paper);
}

.product-comparison-grid {
  width: min(100%, var(--max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.product-overview-card {
  min-width: 0;
  padding: clamp(24px, 3vw, 36px);
  display: flex;
  flex-direction: column;
  gap: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 18px 52px rgba(8, 20, 38, 0.06);
}

.product-overview-card h2 {
  max-width: 16ch;
  font-size: clamp(1.7rem, 2.8vw, 2.45rem);
}

.product-overview-copy > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.product-overview-card .detail-list {
  margin-bottom: 4px;
  gap: 0;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.product-overview-card .detail-list article {
  min-height: auto;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  background: transparent;
  box-shadow: none;
}

.product-overview-card .button {
  align-self: flex-start;
  margin-top: auto;
}

.detail-list {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 253, 248, 0.13);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.13);
}

.detail-list article {
  min-height: 160px;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(255, 253, 248, 0.08), rgba(255, 253, 248, 0.035)),
    rgba(16, 19, 19, 0.46);
}

.detail-list p {
  color: rgba(255, 253, 248, 0.72);
  margin-bottom: 0;
}

.comparison {
  margin-top: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 18px 52px rgba(8, 20, 38, 0.08);
}

.technology {
  display: grid;
  grid-template-columns: minmax(280px, 0.86fr) minmax(360px, 1fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: center;
}


.people-grid {
  width: min(100%, var(--max));
  margin-inline: auto;
}

.people-section {
  background: var(--white);
}

.people-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.person-card {
  min-height: auto;
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 20px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(242, 188, 87, 0.08), transparent),
    var(--white);
  box-shadow: 0 18px 52px rgba(8, 20, 38, 0.05);
}

.person-photo-wrap {
  width: 84px;
  height: 84px;
  position: relative;
  border-radius: 50%;
  background:
    linear-gradient(var(--white), var(--white)) padding-box,
    linear-gradient(135deg, var(--gold), var(--copper)) border-box;
  border: 2px solid transparent;
  box-shadow: 0 16px 34px rgba(8, 20, 38, 0.12);
}

.person-photo {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 50%;
  object-fit: cover;
}

.person-card h3 {
  margin-bottom: 4px;
}

.person-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 10px;
}

.person-link {
  flex: 0 0 auto;
  color: var(--midnight);
  border-bottom: 1px solid rgba(174, 92, 48, 0.55);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  line-height: 1.4;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    color var(--speed) ease,
    border-color var(--speed) ease;
}

.person-link:hover,
.person-link:focus-visible {
  color: var(--copper);
  border-color: var(--copper);
}

.person-card p:last-child {
  color: var(--muted);
  margin-bottom: 0;
}

.protocol-section {
  background: var(--paper);
}

.page-protocols .section {
  padding-block: clamp(38px, 4.5vw, 58px);
}

.page-protocols .section-heading {
  margin-bottom: 20px;
}

.page-protocols .principle-grid article,
.page-protocols .workflow-grid article,
.page-protocols .control-list article {
  min-height: auto;
  padding: 20px;
}

.page-protocols .principle-grid article,
.page-protocols .workflow-grid article {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  column-gap: 12px;
  align-content: start;
}

.page-protocols .principle-grid span,
.page-protocols .workflow-grid span {
  width: 32px;
  height: 32px;
  margin-bottom: 0;
  font-size: 0.78rem;
}

.page-protocols .principle-grid h3,
.page-protocols .workflow-grid h3 {
  align-self: center;
  margin-bottom: 0;
}

.page-protocols .principle-grid article > p,
.page-protocols .workflow-grid article > p {
  grid-column: 1 / -1;
  margin: 14px 0 0;
}

.page-protocols .protocol-steps {
  gap: 8px;
}

.page-protocols .protocol-steps li {
  min-height: auto;
  padding: 16px 18px 16px 58px;
}

.page-protocols .protocol-steps li::before {
  top: 16px;
  left: 18px;
}

.page-protocols .protocol-callout {
  margin-top: 14px;
  padding: 15px 18px;
}

.page-protocols .matrix-grid,
.page-protocols .troubleshooting-table {
  margin-top: 24px;
}

.page-protocols .matrix-row > div,
.page-protocols .trouble-row > div {
  padding: 14px 16px;
}

.page-protocols .workflow-grid,
.page-protocols .control-list {
  gap: 10px;
  margin-top: 18px;
}

.protocol-band {
  background: var(--white);
}

.protocol-section .section-heading,
.protocol-band .section-heading {
  max-width: 880px;
}

.technology-intro {
  padding-top: clamp(38px, 5vw, 62px);
}

.technology-page .section {
  padding-block: clamp(48px, 6.5vw, 82px);
}

.technology-page .section-heading {
  max-width: 900px;
}

.sted-principle-figure {
  width: min(100%, 980px);
  margin: 28px auto 0;
}

.sted-principle-desktop > img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.sted-principle-mobile {
  display: none;
}

.sted-principle-figure figcaption {
  max-width: 860px;
  margin: 10px auto 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.5;
}


.technical-list {
  width: min(100%, var(--max));
  margin-inline: auto;
}

.principle-grid,
.workflow-grid,
.control-list {
  width: min(100%, var(--max));
  margin-inline: auto;
}


.principle-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  box-shadow: 0 18px 52px rgba(8, 20, 38, 0.06);
}

.principle-grid article {
  min-height: 210px;
  padding: 26px;
  background: var(--white);
}

.principle-grid span,
.workflow-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 36px;
  color: var(--midnight);
  background: var(--gold);
  border-radius: 50%;
  font-size: 0.86rem;
  font-weight: 850;
}

.principle-grid p,
.workflow-grid p,
.control-list p {
  color: var(--muted);
}


.control-list article {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(242, 188, 87, 0.08), transparent 44%),
    var(--white);
}

.technical-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.technical-list.two-column {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.technical-list article {
  min-height: 170px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(242, 188, 87, 0.07), transparent 42%),
    var(--white);
  box-shadow: 0 18px 52px rgba(8, 20, 38, 0.05);
}

.technical-list p {
  color: var(--muted);
  margin-bottom: 0;
}

.mechanism-panel {
  width: min(100%, var(--max));
  margin: 24px auto 0;
  display: grid;
  grid-template-columns: 1.12fr repeat(2, minmax(0, 0.94fr));
  gap: 14px;
}

.mechanism-panel article {
  min-height: 220px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 18px 52px rgba(8, 20, 38, 0.05);
}

.mechanism-panel p {
  color: var(--muted);
}

.equation-display {
  min-height: 84px;
  margin: 16px 0 18px;
  padding: 16px;
  display: grid;
  place-items: center;
  overflow-x: auto;
  border-block: 1px solid rgba(216, 149, 47, 0.38);
  color: var(--ink);
  background: rgba(242, 188, 87, 0.08);
}

.equation-display math {
  font-family: "STIX Two Math", "Cambria Math", "Times New Roman", serif;
  font-size: clamp(1.02rem, 1.35vw, 1.24rem);
}

.research-note {
  width: min(100%, var(--max));
  margin: 24px auto 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 18px 52px rgba(8, 20, 38, 0.05);
}

.research-note > div:first-child {
  max-width: 820px;
  margin-bottom: 18px;
}

.research-note h3 {
  margin-bottom: 0;
  font-size: clamp(1.35rem, 2.2vw, 2rem);
}

.research-note-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.research-note-grid article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(242, 188, 87, 0.06), transparent 46%),
    var(--paper);
}

.research-note-grid h4 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.research-note-grid p {
  color: var(--muted);
}

.protocol-layout {
  width: min(100%, var(--max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}

.protocol-sidebar {
  position: sticky;
  top: 158px;
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.protocol-sidebar a {
  padding: 14px 16px;
  color: var(--ink);
  background: var(--white);
  font-size: 0.9rem;
  font-weight: 780;
}

.protocol-sidebar a:hover,
.protocol-sidebar a:focus {
  color: var(--copper);
  outline: none;
}

.protocol-main {
  min-width: 0;
}

.inline-heading {
  width: 100%;
  margin: 0 0 30px;
}

.protocol-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: protocol-step;
}

.protocol-steps li {
  position: relative;
  min-height: 108px;
  padding: 22px 22px 22px 78px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--muted);
}

.protocol-steps li::before {
  counter-increment: protocol-step;
  content: counter(protocol-step, decimal-leading-zero);
  position: absolute;
  top: 22px;
  left: 22px;
  color: var(--amber);
  font-weight: 880;
}

.protocol-steps strong {
  display: block;
  margin-bottom: 5px;
  color: var(--ink);
}

.protocol-callout {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  margin-top: 18px;
  padding: 18px 20px;
  border: 1px solid rgba(242, 188, 87, 0.38);
  border-radius: var(--radius);
  background: var(--pale-gold);
}

.protocol-callout strong {
  color: var(--copper);
}

.matrix-grid,
.troubleshooting-table {
  width: min(100%, var(--max));
  margin: 34px auto 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 18px 52px rgba(8, 20, 38, 0.06);
}

.matrix-row,
.trouble-row {
  display: grid;
  border-top: 1px solid var(--line);
}

.matrix-row {
  grid-template-columns: 0.74fr 1.28fr 1.18fr;
}

.trouble-row {
  grid-template-columns: 0.82fr 1.2fr 1.28fr;
}

.matrix-row:first-child,
.trouble-row:first-child {
  border-top: 0;
}

.matrix-row > div,
.trouble-row > div {
  padding: 18px;
  border-left: 1px solid var(--line);
}

.matrix-row > div:first-child,
.trouble-row > div:first-child {
  border-left: 0;
}

.matrix-head,
.trouble-head {
  color: var(--white);
  background: var(--navy);
  font-size: 0.8rem;
  font-weight: 850;
  text-transform: uppercase;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.workflow-grid article {
  min-height: 286px;
  padding: 24px;
  border: 1px solid rgba(242, 188, 87, 0.23);
  border-radius: var(--radius);
  color: var(--white);
  background:
    linear-gradient(180deg, rgba(255, 253, 248, 0.08), rgba(255, 253, 248, 0.035)),
    var(--navy);
}

.workflow-grid p {
  color: rgba(255, 253, 248, 0.72);
}

.control-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.source-section {
  background:
    linear-gradient(90deg, rgba(45, 55, 58, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(45, 55, 58, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 64px 64px;
}

.publication-list {
  width: min(100%, 900px);
  margin: 24px auto 0;
  padding-left: 22px;
  color: var(--muted);
}

.publication-list li {
  margin-bottom: 14px;
  padding-left: 6px;
}

.publication-list a {
  color: var(--ink);
  font-weight: 600;
  line-height: 1.55;
}

.publication-list a:hover,
.publication-list a:focus {
  color: var(--amber);
  outline: none;
}

.publication-list em {
  color: #3d484b;
}

.publication-groups {
  width: min(100%, 980px);
  margin: 28px auto 0;
}

.publication-group + .publication-group {
  margin-top: 38px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.publication-group h3 {
  margin: 0;
  font-size: 1.15rem;
}

.publication-group .publication-list {
  width: 100%;
  margin-top: 16px;
}

.technology-contact {
  background: var(--pale-gold);
}

.technology-contact-inner {
  width: min(100%, var(--max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
}

.technology-contact-inner h2 {
  margin-bottom: 10px;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.technology-contact-inner p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.protocol-contact {
  align-items: center;
  background: var(--white);
}

.protocol-contact .button {
  justify-self: start;
  min-height: 52px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(320px, 1fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: start;
  padding: clamp(48px, 6vw, 80px) clamp(18px, 4vw, 42px);
}

.product-use-cases {
  width: min(100%, var(--max));
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.product-use-cases strong {
  color: var(--ink);
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: #233244;
  font-size: 0.92rem;
  font-weight: 750;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid #cbd6df;
  border-radius: 6px;
  padding: 12px 13px;
  color: var(--ink);
  background: var(--white);
}

.contact-form textarea {
  resize: vertical;
  min-height: 132px;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 3px solid rgba(242, 188, 87, 0.32);
  border-color: var(--amber);
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.site-footer {
  padding: 18px clamp(18px, 4vw, 42px);
  color: rgba(255, 255, 255, 0.72);
  background: var(--midnight);
}

.site-footer p {
  width: min(100%, var(--max));
  margin: 0 auto;
  font-size: 0.86rem;
}

@media (max-width: 1020px) {
  .nav-menu {
    gap: 1px;
  }

  .nav-link {
    padding-inline: 8px;
  }


  .principle-grid,
  .mechanism-panel,
  .technical-list,
  .technical-list.two-column,
  .research-note-grid,
  .control-list {
    grid-template-columns: repeat(2, 1fr);
  }


  .workflow-grid,
  .people-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .catalog-grid {
    grid-template-columns: 1fr;
  }

  .matrix-row,
  .trouble-row {
    grid-template-columns: 1fr;
  }

  .matrix-head,
  .trouble-head {
    display: none;
  }


  .matrix-row > div,
  .trouble-row > div {
    border-top: 1px solid var(--line);
  }


  .matrix-row > div,
  .trouble-row > div {
    border-left: 0;
  }
}

@media (max-width: 1100px) {
  .site-header {
    padding: 12px 16px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    inset: 68px 16px auto;
    max-height: calc(100svh - 84px);
    overflow: auto;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 10px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .menu-open .nav-menu {
    display: flex;
  }

  .nav-link,
  .site-header.is-scrolled .nav-link {
    width: 100%;
    min-height: 46px;
    color: var(--ink);
    padding-inline: 12px;
  }

  .hero {
    min-height: 660px;
  }

  .hero-image {
    object-position: 62% 50%;
  }

  .hero-scrim {
    background:
      linear-gradient(90deg, rgba(16, 19, 19, 0.93), rgba(16, 19, 19, 0.56)),
      linear-gradient(0deg, rgba(16, 19, 19, 0.82), rgba(16, 19, 19, 0.08));
  }

  .hero-content {
    width: 100%;
    padding-top: 104px;
    padding-bottom: 42px;
  }

  .hero-lede {
    max-width: 34ch;
  }

  h1 {
    max-width: 10ch;
    font-size: clamp(2.55rem, 11vw, 4rem);
    line-height: 1;
  }


  .technology,
  .protocol-layout,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .section-heading {
    margin-left: auto;
  }

  .protocol-sidebar {
    position: static;
    grid-template-columns: repeat(2, 1fr);
  }

  .subpage-hero {
    min-height: clamp(340px, 48svh, 440px);
  }

  .subpage-hero-content {
    width: 100%;
    padding-top: 88px;
    padding-bottom: 34px;
  }
}

@media (max-width: 620px) {
  .brand small {
    display: none;
  }

  .brand img {
    width: 138px;
  }


  .catalog-grid,
  .people-grid,
  .principle-grid,
  .mechanism-panel,
  .technical-list,
  .technical-list.two-column,
  .research-note-grid,
  .workflow-grid,
  .control-list {
    grid-template-columns: 1fr;
  }

  .product-comparison-grid {
    grid-template-columns: 1fr;
  }

  .product-overview-card .button {
    width: 100%;
  }


  .matrix-row > div,
  .trouble-row > div {
    border-left: 0;
  }

  .hero-actions,
  .hero-actions .button,
  .contact-form .button,
  .protocol-contact .button {
    width: 100%;
  }

  .hero-actions .button,
  .contact-form .button,
  .protocol-contact .button {
    min-height: 48px;
  }


  .mechanism-panel article,
  .technical-list article {
    min-height: auto;
  }

  .research-note {
    padding: 18px;
  }

  .research-note-grid article {
    padding: 16px;
  }

  .technology-contact-inner {
    grid-template-columns: 1fr;
  }

  .technology-contact-inner .button {
    width: 100%;
  }

  .sted-principle-desktop {
    display: none;
  }

  .sted-principle-mobile {
    display: grid;
    gap: 12px;
  }

  .sted-figure-crop {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--white);
  }

  .sted-figure-crop img {
    position: absolute;
    top: 0;
    display: block;
    max-width: none;
    height: 100%;
  }

  .sted-figure-crop.spatial-panel {
    aspect-ratio: 720 / 420;
  }

  .sted-figure-crop.spatial-panel img {
    left: 0;
    width: 163.9%;
  }

  .sted-figure-crop.state-panel {
    aspect-ratio: 460 / 360;
  }

  .sted-figure-crop.state-panel img {
    left: -156.52%;
    width: 256.52%;
    height: auto;
  }

  .equation-display {
    min-height: 76px;
    padding-inline: 10px;
  }

  .equation-display math {
    font-size: 0.98rem;
  }

  .hero-lede {
    max-width: 30ch;
    font-size: 1.04rem;
  }

  .subpage-hero h1 {
    max-width: 10ch;
  }

  .protocol-sidebar {
    grid-template-columns: 1fr;
  }

  .protocol-steps li {
    padding-left: 22px;
    padding-top: 54px;
  }

  .protocol-callout {
    grid-template-columns: 1fr;
  }

  .person-card {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .hero-actions,
  .site-footer,
  [data-print-page] {
    display: none !important;
  }

  body {
    color: #111;
    background: #fff;
  }

  .subpage-hero,
  .section,
  .protocol-band,
  .protocol-section {
    min-height: auto;
    color: #111;
    background: #fff !important;
  }
}


.nav-link.nav-action {
  margin-left: 10px;
  padding-inline: 15px;
  color: var(--midnight);
  background: var(--gold);
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(242, 188, 87, 0.24);
}

.site-header.is-scrolled .nav-link.nav-action,
.nav-menu a.nav-action[aria-current="page"] {
  color: var(--midnight);
}

@media (max-width: 1100px) {
  .nav-link.nav-action {
    margin-left: 0;
    margin-top: 8px;
    justify-content: center;
  }

  .hero-scrim {
    background:
      linear-gradient(90deg, rgba(16, 19, 19, 0.82), rgba(16, 19, 19, 0.46)),
      linear-gradient(0deg, rgba(16, 19, 19, 0.54), rgba(16, 19, 19, 0.08));
  }
}

/* Lighter section treatment: keep contrast for readability without heavy block segmentation. */
.dark {
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(242, 188, 87, 0.06), transparent 54%),
    var(--white);
}

.dark::before {
  opacity: 0;
}

.dark .section-kicker,
.technology .section-kicker {
  color: var(--amber);
}

.product-card,
.detail-list,
.detail-list article {
  color: var(--ink);
  border-color: var(--line);
  background: var(--white);
  box-shadow: 0 18px 52px rgba(8, 20, 38, 0.06);
}

.product-card p,
.detail-list p {
  color: var(--muted);
}


.text-link,
.dark .inline-link {
  color: var(--copper);
}

.button.ghost {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(255, 253, 248, 0.74);
}

.form-note:empty {
  display: none;
}